Answer:
There are 3,268,760 different ways to place the lunch order for the 10 lunches.
Explanation:
Who gets what lunch is not important, that means, the order in which the lunches are organized is not important. So the combinations formula is used to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
In this problem, we have that:
10 lunches from a set of 25. So
There are 3,268,760 different ways to place the lunch order for the 10 lunches.